Senior Estimator - Nuclear Decommissioning & Environmental Remediation

Dokainish & Company • Toronto, ON

9d • Hybrid

About The Position

Dokainish & Company is seeking a Senior Estimator to join a high-performing program controls team supporting a major, long-duration nuclear decommissioning and radioactive waste management program. This is a technically demanding, high-visibility role in which the incumbent will own the end-to-end development of project cost estimates and supporting documentation across a complex, multi-project portfolio, spanning reactor decommissioning, radioactive waste facility operations, environmental remediation, and fuel processing programs. Prior hands-on estimating experience on nuclear decommissioning projects or within licensed nuclear facilities is strongly preferred. Candidates with direct exposure to nuclear facility environment, including decommissioning, waste management, remediation of contaminated nuclear sites, or active nuclear plant maintenance and modifications, will be given strong preference in the selection process. The successful candidate will bring deep estimating craft, not just process familiarity, and will be expected to build, defend, and stand behind their estimates throughout client review cycles. This is a builder role, not a reviewer role. We are hiring for a full-time permanent role. That said, if you are an exceptional candidate seeking a fixed-term or contract engagement, we encourage you to apply, we are open to discussing alternative arrangements for the right person.

Requirements

• Minimum 10 years of capital project estimating experience; significant experience in nuclear decommissioning, radioactive waste management, environmental remediation of nuclear-contaminated sites, or capital projects within licensed nuclear facilities (CANDU, research reactors, fuel processing, isotope production, or equivalent) is strongly preferred.
• Demonstrated experience preparing estimates across AACE Class 1–5 on projects of significant scale and complexity.
• Strong BOE authorship track record, document samples will be requested during the interview process.
• Experience in multi-project program environments with concurrent estimate workloads.
• AACE membership in good standing; CCP, CEP, or PSP designation preferred.
• University degree in Engineering, Construction Management, Applied Sciences, or a related field; equivalent combinations of technical certification and demonstrated experience will be considered.
• Must be eligible for Canadian nuclear facility security clearance; existing clearance is an asset.
• APPLICATION REQUIREMENT - BOE Sample: A Basis of Estimate (BOE) document sample must be submitted with your application. Please remove/redact any confidential client or project information prior to submission. Applications without a BOE sample will not be considered.

Nice To Haves

• Prior hands-on estimating experience on nuclear decommissioning projects or within licensed nuclear facilities is strongly preferred.
• Direct exposure to nuclear facility environment, including decommissioning, waste management, remediation of contaminated nuclear sites, or active nuclear plant maintenance and modifications.
• A track record of nuclear decommissioning or nuclear facility estimating as the primary work, not supporting or incidental exposure. This includes reactor D&D, interim and long-term waste storage facility construction, radioactive waste characterization and treatment facilities, nuclear fuel processing, isotope facility decommissioning, or environmental remediation of nuclear-contaminated sites.
• BOE authorship at a standard that holds up under independent technical review. Candidates should be able to walk through their document structure from memory and articulate what reviewers will challenge.
• Estimating across multiple simultaneous projects, production discipline, not just depth on one large assignment.
• Experience in Canadian nuclear is a strong differentiator.
• Comfort operating in a structured, milestone-driven program controls framework alongside schedulers, risk analysts, and program managers.

Responsibilities

• Develop project-level baseline cost estimates (AACE Class 3–5) across a diverse portfolio of nuclear decommissioning, waste management, and remediation projects.
• Produce comprehensive Bases of Estimate (BOE) for each project, including methodology narrative, source data, escalation rationale, key assumptions, exclusions, and stated accuracy range.
• Apply parametric, analogous, and bottom-up estimating methodologies; select the appropriate approach based on available information and document the rationale explicitly.
• Develop time-phased cost profiles integrated with project schedules; collaborate with senior schedulers on cost loading, resource histograms, and S-curve generation.
• Provide cost uncertainty inputs (P10/P50/P90 distributions, key cost drivers) to the project risk and quantitative risk analysis process.
• Establish and apply consistent estimating norms and unit rates scaled to project complexity and information maturity across the portfolio.
• Support program-level planning deliverables: resource allocation plans, escalation profiles, and multi-year cost projections.
• Respond to queries on estimate basis and methodology with traceable, well-documented backup within defined timelines.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: Associate degree
• Number of Employees: 1-10 employees